Takano, Nakamura and Watanabe move the question of restorative environments from short-term experience to longitudinal urban health. Their five-year cohort study of 3,144 older residents in metropolitan Tokyo associated survival with nearby spaces for strolling, parks and tree-lined streets, while controlling for age, sex, marital status, baseline functional condition and socioeconomic status. The decisive conceptual move is the formulation of “walkable green spaces”: greenery becomes significant not as visual quantity alone but as an accessible spatial condition embedded in everyday movement. The work therefore joins landscape, mobility and public health through a measurable urban configuration. Its methodology translates environmental qualities into cohort variables and tests them against the unusually hard endpoint of longevity rather than preference or self-reported well-being. The broader bridge is to healthy urbanism: streets, parks and proximity become preventive health resources, suggesting that planning can operate upstream by arranging conditions that support activity, social continuity and sustained contact with green public space.